State laws on generic drug substitution vary widely across the U.S., affecting how pharmacists swap brand-name drugs for cheaper generics. Learn how consent rules, NTI drug restrictions, and biosimilar policies impact your prescriptions and what you can do to protect your health.
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Drug patents last 20 years from filing, but most drugs only have 7-12 years of market exclusivity due to long approval times. Extensions, regulatory barriers, and patent stacking can delay generics for years - here's how it really works.
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